ASRock PRO-650G Power Supply - 650W 80 Plus Gold vs iUniker 27W PD USB-C Power Supply for Raspberry Pi
Updated August 2026 — ASRock PRO-650G Power Supply - 650W 80 Plus Gold wins on power and warranty, iUniker 27W PD USB-C Power Supply for Raspberry Pi wins on size.
The ASRock PRO-650G Power Supply is the better choice for high-performance needs, while the iUniker is ideal for budget Raspberry Pi users.
Why ASRock PRO-650G Power Supply - 650W 80 Plus Gold is better
Power Output
650W vs 27W
Efficiency
80 PLUS Gold certified
Warranty
3-year warranty vs unspecified
Why iUniker 27W PD USB-C Power Supply for Raspberry Pi is better
Price
$10.99 vs $49.99
Size
Compact design for portability
Target Use
Designed specifically for Raspberry Pi
Overall score
Specifications
| Spec | ASRock PRO-650G Power Supply - 650W 80 Plus Gold | iUniker 27W PD USB-C Power Supply for Raspberry Pi |
|---|---|---|
| Output | 650W | 27W |
| Efficiency Rating | 80 PLUS Gold | N/A |
| Form Factor | ATX 3.1 | USB-C |
| Cooling Fan | 120mm | N/A |
| Protection Features | Comprehensive | Basic |
Dimension comparison
Overview of the Products
The ASRock PRO-650G Power Supply is designed for mid-range gaming and productivity systems, while the iUniker 27W PD USB-C Power Supply is specifically tailored for Raspberry Pi 5 users. The ASRock unit is priced at $49.99, making it significantly more expensive than the iUniker power supply, which retails for $10.99. This price difference of approximately 354% reflects the different target markets and capabilities of each product.
Power Output and Efficiency
When it comes to power output, the ASRock PRO-650G delivers a robust 650W with 80 PLUS Gold certification, ensuring up to 90% energy efficiency. This level of output is suitable for high-performance components, providing 54.1A on the +12V rail. In contrast, the iUniker power supply offers a maximum output of 27W, which is adequate for powering Raspberry Pi devices but not suitable for more demanding systems. The stark difference in power capabilities makes the ASRock unit a clear choice for users needing substantial power.
Design and Build Quality
The design of the ASRock PRO-650G emphasizes efficiency and cooling, featuring a quiet 120mm fan and a flat cable design for improved airflow and management. Additionally, it employs high-quality all-Taiwanese capacitors for durability. The iUniker power supply, on the other hand, utilizes GaN technology, allowing for a compact design without sacrificing power. While both units prioritize quality, the ASRock’s larger form factor is intended for desktop setups, while the iUniker is optimized for portability and low heat generation.
Compatibility and Use Cases
Compatibility is a critical factor when selecting a power supply. The ASRock PRO-650G is ATX 3.1 ready, making it suitable for modern and next-generation components, perfect for gaming rigs and productivity setups. It fits standard ATX form factors, ensuring easy installation in most PC cases. Conversely, the iUniker power supply is specifically designed for the Raspberry Pi 5, supporting various output voltages tailored for this device. This targeted compatibility means each power supply excels in its respective niche.
Protection Features
Both power supplies include safety features to protect connected devices. The ASRock PRO-650G boasts comprehensive protections, including over-voltage, under-voltage, over-power, over-temperature, and short-circuit protections. This makes it a reliable choice for users concerned about the safety of their expensive components. The iUniker power supply also offers over-voltage and short-circuit protection, ensuring safe operation for Raspberry Pi users. While both products provide essential safety features, the ASRock unit offers a more extensive range of protections suited for high-power applications.
Warranty and Customer Support
The ASRock PRO-650G comes with a 3-year warranty, providing peace of mind for users who invest in a power supply. This warranty period is considerably longer than that of typical budget power supplies, indicating manufacturer confidence in the product's durability. The iUniker power supply does not specify a warranty period, which may be a consideration for consumers looking for assurance with their purchase. Reliable customer support is offered for both products, but the warranty length can be a deciding factor for many buyers.
Pricing and Value
At $49.99, the ASRock PRO-650G is significantly pricier compared to the iUniker power supply, which costs only $10.99. This results in a price difference of about $39.00, making the iUniker approximately 78% cheaper. However, the value derived from each product varies greatly based on intended use. The ASRock unit offers high power output and efficiency for demanding systems, while the iUniker serves as a low-cost solution for Raspberry Pi enthusiasts. Thus, the perceived value hinges on the user's specific needs.
Which should you buy?
Choosing between the ASRock PRO-650G Power Supply and the iUniker 27W PD USB-C Power Supply ultimately depends on your requirements. If you need a high-performance power supply for a gaming PC or a productivity system, the ASRock PRO-650G is the superior choice with its 650W output, efficiency, and extensive safety features. However, if you're looking for an affordable option to power a Raspberry Pi 5, the iUniker's compact design and low price make it an excellent selection. Assess your needs carefully to determine which power supply aligns best with your setup.

